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Make sure memfile growth gets tested

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This commit is contained in:
Eric Fischer 2016-10-26 15:57:24 -07:00
parent 8296190487
commit 7e6aa19d42
1 changed files with 5 additions and 4 deletions
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9
memfile.cpp
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@ -5,26 +5,27 @@
#include "memfile.hpp"
#define INCREMENT 131072
#define INITIAL 256
struct memfile *memfile_open(int fd) {
if (ftruncate(fd, INCREMENT) != 0) {
if (ftruncate(fd, INITIAL) != 0) {
return NULL;
}
char *map = (char *) mmap(NULL, INCREMENT, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
char *map = (char *) mmap(NULL, INITIAL, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (map == MAP_FAILED) {
return NULL;
}
struct memfile *mf = new memfile;
if (mf == NULL) {
munmap(map, INCREMENT);
munmap(map, INITIAL);
return NULL;
}
mf->fd = fd;
mf->map = map;
mf->len = INCREMENT;
mf->len = INITIAL;
mf->off = 0;
mf->tree = 0;